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High-precision potassium isotope analysis using the Nu Sapphire collision cell(CC)-MC-ICP-MS

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Science China Earth Sciences 2022年第8期65卷 1510-1521页

作者： Wenjun LI Mengmeng CUI Qiqi PAN jing WANG Bingyu GAO Shanke LIU Meng YUAN Benxun SU Ye ZHAO Fang-Zhen TENG Guilin HAN Key Laboratory of Mineral Resources Institute of Geology and GeophysicsChinese Academy of SciencesBeijing100029China University of Chinese Academy of Sciences Beijing100049China State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing100029China Nu Instruments WrexhamLL139XSUK Isotope Laboratory Department of Earth and Space SciencesUniversity of WashingtonSeattleWA98195USA Institute of Earth Sciences China University of Geosciences(Beijing)Beijing100083China

This study presents high-precision analyses of stable potassium(K)isotope ratio using the recently-developed,collision-cell multi-collector inductively coupled plasma mass spectrometry(CC-MC-ICP-MS,Nu Sapphire).The accuracy of our analyses is confirmed by measuring well-characterized geostandards(including rocks and seawater).Our results are consistent with literature values and a precision of 0.04‰(2SD)has been achieved based on multiple measurements of BCR-2 geostandard over a six-month *** also evaluate factors that may lead to artificial isotope fractionations,including the mismatches in K concentration and acid molarity between samples and bracketing standards,as well as potential *** the K adsorption capacity of AGW50-X8(200-400 mesh)is reduced with an increasing amount of matrix elements,less than 150µg K was loaded during the column *** evaluate the potential use of K isotopes as an archive of paleo seawater composition,δ^(41)K values of an international seawater standard(IAPSO),a Mn-nodule(NOD-P-1),and two iron formation standards(FeR-2 and FeR-4)are *** δ^(41)K value of IAPSO is consistent with other seawater samples reported previously,further substantiating a homogeneous K isotopic distribution in modern global *** K isotopes in Mn-nodule(NOD-P-1:−0.121±0.013‰)and iron formation samples(FeR-2:−0.538±0.009‰;FeR-4:−0.401±0.008‰)seem to be an effective tracer of their formation genesis and compositional changes of ancient *** results suggest that high-precision measurements of stable K isotopes can be routinely obtained and open up a large variety of geological applications,such as continental weathering,hydrothermal circulation and alteration of oceanic crust.

关键词： CC-MC-ICP-MS Potassium isotopes Geostandards Sample-standard bracketing method Low energy path

NUMERICAL INVESTIGATION ON THE AEROELASTIC BEHAVIOR OF AN AIRSHIP WITH HUll-FIN CONFIGURATION

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Journal of Hydrodynamics 2010年第2期22卷 207-213页

作者： LIU Jian-min LU Chuan-jing - XUE Lei-ping Marine Engineering Institute Jimei University Xiamen 361021 China School of Naval Architecture Ocean and Civil Engineering Shanghai Jiao Tong University Shanghai 200240China State Key Laboratory of Ocean Engineering Shanghai Jiao Tong University Shanghai 200030 China

Numerical investigation was conducted on an airship of hull-fin configuration for aerodynamic and aeroelastic characteristics in three-dimensional viscous *** mathematical model was built and the corresponding numerical code was developed for the fluid-structure interaction *** governing equations of the viscous flow with ll-Low Reynolds modified model were solved by the standard SIMPLE algorithm based on the finite volume method.A fluid-structure coupled method was employed to solve the nonlinear aeroelasticity problem for the *** computational results of the viscous flow are in good agreement with the experimental *** simulation on the aeroelastic behavior of the airship in a trimmed flight reveals the effect of structure flexibility on the aerodynamic performance.

关键词： fluid-structure interaction airship aeroelasticity flexibility

TBtools-II: A “one for all, all for one” bioinformatics platform for biological big-data mining

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Molecular Plant 2023年第11期16卷 1733-1742页

作者： Chengjie Chen Ya Wu Jiawei Li Xiao Wang Zaohai Zeng jing Xu Yuanlong Liu Junting Feng Hao Chen Yehua He Rui Xia State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources College of HorticultureSouth China Agricultural UniversityGuangzhouGuangdong 510640China Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in South China Ministry of Agriculture and Rural AffairSouth China Agricultural UniversityGuangzhouGuangdong 510640China Guangdong Laboratory for Lingnan Modern Agriculture South China Agricultural UniversityGuangzhouGuangdong 510640China Guangdong Key Laboratory of Non-human Primate Research Guangdong-Hongkong-Macao Institute of CNS RegenerationJinan UniversityGuangzhouGuangdong 510632China State Key Laboratory of Crop Stress Adaptation and Improvement Henan Joint International Laboratory for Crop Multi-Omics ResearchSchool of Life SciencesHenan UniversityKaifeng 475004China Key Laboratory of Genetic Improvement of Bananas Sanya Research InstituteState Key Laboratory of Tropical Crop BreedingInstitute of Tropical Bioscience and BiotechnologyChinese Academy of Tropical Agricultural SciencesHaikouHainan 571101China College of Agronomy Hunan Agricultural UniversityChangsha 410128China

Since the official release of the stand-alone bioinformatics toolkit TBtools in 2020,its superior functionality in data analysis has been demonstrated by its widespread adoption by many thousands of users and references in more than 5000 academic ***,TBtools is a commonly used tool in biological *** the past 3 years,thanks to invaluable feedback and suggestions from numerous users,we have optimized and expanded the functionality of the toolkit,leading to the development of an upgraded version—*** this upgrade,we have incorporated over 100 new features,such as those for comparative genomics analysis,phylogenetic analysis,and data ***,to better meet the increasing needs of personalized data analysis,we have launched the plugin mode,which enables users to develop their own plugins and manage their selection,installation,and removal according to individual *** date,the plugin store has amassed over 50 plugins,with more than half of them being independently developed and contributed by TBtools *** plugins offer a range of data analysis options including co-expression network analysis,single-cell data analysis,and bulked segregant analysis sequencing data ***,TBtools is now transforming from a stand-alone software to a comprehensive bioinformatics platform of a vibrant and cooperative community in which users are also developers and *** promoting the theme“one for all,all for one”,we believe that TBtools-II will greatly benefit more biological researchers in this big-data era.

关键词： TBtools-ll plugin biological big data BSA-seq

~1H-^(27)Al CP/MAS NMR STUDIES OF DEALUMINATED HZSM-5 ZEOLITE

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Chinese Chemical Letters 1993年第5期4卷 453-456页

作者： Feng DENG and You Ru DU State Key Lab. of Magn. Resort. and Atomic and Mol. Phys., Wuhan Inst. of Phys., the Chinese Academy of Sciences, Wuhan 430071 Kai Xuan WANG Da Tong DING jing Zhong WANG He Xuan.ll Department of Chemistry, Nankai University, Tianjin 300071

Recently introduced method of ~1H-^(27)Al CP/MAS was used to study the dealuminated HZSM-5 zeolite. The experimental result suggests that the resonance signal at ca. 30ppm is an independent signal (not part of a second-order quadrupolar lineshape), probably resulted from 5-coordinated non-framework aluminium (Al^(NFP)). The coincidence of the peaks of 4-coordinated framework (Al^F) and 4-coordinated non-framework (Al^(NF)) aluminium at 60ppm was confirmed by ^(27)Al MAS NMR after treating the dealuminated sample with acetylacetone (acac).

关键词： MAS AIN NMR CP

贵州省某废渣场环境管控方案之封场设计方案初探

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化工设计通讯 2024年第5期50卷 135-137页

作者：袁松段怡彤景国瑞史阳耿欣尹然王奕文中国城市建设研究院有限公司北京100120 中城院(北京)环境科技股份有限公司北京100120

以贵州省某废渣场为例,结合《危险废物填埋污染控制标准》(GB 18598—2019)的要求对该废渣场的封场设计方案进行了分析。并从工程建设及实际条件出发,通过终场覆盖系统中防渗层的选择与确定。制定了针对废渣场封场设计方案,可为今后的... 详细信息

以贵州省某废渣场为例,结合《危险废物填埋污染控制标准》(GB 18598—2019)的要求对该废渣场的封场设计方案进行了分析。并从工程建设及实际条件出发,通过终场覆盖系统中防渗层的选择与确定。制定了针对废渣场封场设计方案,可为今后的类似项目封场方案设计提供借鉴与参考。

关键词：废渣场环境管控封场设计方案

慢性心力衰竭患者出院准备度水平及影响因素分析

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中国护理管理 2018年第10期18卷 1352-1357页

作者：程婧黄丽陈龙菊许邦龙王晓晨何非安徽中医药大学护理学院合肥市230012 安徽医科大学第二附属医院心血管内科

目的 :分析影响慢性心力衰竭(CHF)患者出院准备度的因素。方法 :调查316名CHF患者基本资料、出院准备度、出院指导质量以及自我护理指数,分析影响出院准备度的因素。结果 :CHF患者出院准备度总分为(138.58±15.11)分,线性回归分析结果表... 详细信息

目的 :分析影响慢性心力衰竭(CHF)患者出院准备度的因素。方法 :调查316名CHF患者基本资料、出院准备度、出院指导质量以及自我护理指数,分析影响出院准备度的因素。结果 :CHF患者出院准备度总分为(138.58±15.11)分,线性回归分析结果表明,首次住院、非医嘱出院、高龄、病程和出院带药多是出院准备度的不利因素,出院指导质量和自我护理指数也是出院准备度的影响因素。结论 :CHF患者出院准备度水平较低,可通过提高出院指导质量和自我护理能力进行针对性干预。

关键词：慢性心力衰竭出院准备度出院指导质量自我护理指数

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高职实践教学及评价体系的探讨研究

经济研究导刊 2012年第22期 246-248页

作者：赵静高迎冬李杰河北交通职业技术学院石家庄050035

高等职业教育实践教学体系建设以职业岗位技能要求为目标,以岗位标准为依据,以学生就业为目的。在实践教学体系的支撑下开展活动,并对实践教学评价进行了研究和探讨,完成并达到各专业人才培养目标要求。

关键词：实践教学评价体系高职

Capacity and Flexibility Improvement of Traffic Aggregation for Fixed 5G:Key Enabling Technologies,Challenges and Trends

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China Communications 2022年第12期19卷 1-13页

作者： jing Zhang Tianhai Chang Zhuqiang Zhong Xianqing Jin Shaohua Hu Taowei Jin Jiahao Zhou Mingyue Zhu Yi Yu Jianming Tang Liangchuan Li Kun Qiu School of Communication and Information Engineering University of Electronic Science and Technology of ChinaChengduSichuan 611731China Optical Research Dept Huawei Technologies518129ShenzhenChina School of Electronic Engineering Bangor UniversityBangorLL571UTUK

As the emergence of various highbandwidth services and the requirements to support 5G/Wi-Fi 6 wireless networks,the next generation fixed networks,i.e.F5G,are expected to be realized in the 5G era.F5G is endowed with new characteristics,including ultra-high bandwidth,all-optical connections and optimal service *** the prospect of optical-to-everywhere,optical technologies are used for mobile front-haul,mid-haul,and *** access networks would play an important role in F5G to support radio access network and fixed access ***-latency PON is a key for cost effective-haul traffic *** terms of signal transmission,intensity modulation directdetection(IM-DD)is a promising scheme due to its simple *** fundamental challenge associated with direct-detection is the disappearance of the transmitted signal’s *** access network,the flexibility and low latency are the two key factors affecting service *** this article,we review the evolution of PONs and the challenges of current PONs in *** analyze key enabling digital signal processing(DSP)techniques,including detection linearization for direct-detection and simplified coherent detection,adaptive equalizers,digital filer enabled flexible access network and low-latency inter-ONU ***,we discuss the developing trends of future optical access networks.

关键词： optical fiber communication flexible access network optical field recovery inter-ONU communication

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谈内蒙古汽车综合性能检测机构规范化

交通企业管理 2019年第4期34卷 39-40页

作者：李志虎景超煦内蒙古自治区交通运输管理局中国人民银行呼和浩特中心支行

一、汽车综合性能检测机构概述随着内蒙古自治区经济社会持续快速发展,机动车数量也在迅猛增长。截至2018年底,内蒙古拥有营运客车(包括班线客车、旅游包车客车)11268辆;营业性载货汽车29.2万辆(其中牵引车5.7万辆);营业性道路危险货物... 详细信息

一、汽车综合性能检测机构概述随着内蒙古自治区经济社会持续快速发展,机动车数量也在迅猛增长。截至2018年底,内蒙古拥有营运客车(包括班线客车、旅游包车客车)11268辆;营业性载货汽车29.2万辆(其中牵引车5.7万辆);营业性道路危险货物运输车10754辆。营运车辆运行中,随着时间和行驶里程的增加,汽车零部件经过磨损、腐蚀、变形、老化等过程,因运动副间隙变大,易发生汽车零部件振动、松旷、异响、“三漏”等现象,降低了汽车安全技术性能,汽车综合性能检测能及时发现车辆存在的安全隐患,保护人民群众生命财产安全。

关键词：营运车辆综检机构综合性能工作流程内蒙古